brown algae,small bubbles

[Ruth]

From the pictures that looks more like Diatoms. Just a natural thing that happens on most new set ups. Limit light and it will pass.

[MikeP]

I agree with Ruth, reduce light, feed less and it should go away on it's own. I'll also be the one to give you constructive criticism Unless you bought your set up used and saved the water and rock etc. you should keep a very close eye on your tank parameters since you already put fish, inverts, and mushrooms in. In the near future you will likely get some 'spikes' that may kill some of your tanks inhabitants.

HTH
Mike

[marie]

I have a million and six (only a slight exaggeration ) cerith type snails. they would help with diatoms and keeping the sand clean, if you wanted to come by and pick some up

[Tarolisol]

If its a new tank with no inhabitants its diatoms and will go away eventully, its a cycle thing, but if you have stuff in the tank and are feeding it will take longer, but it should still balance out. If you dont see an imporvment in a couple days, i would sugest a water changed, but i dont even follow my own advice, cycleing is a slow process and will take time.